:root {
    /* Typography */
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Colors - Gruvbox */
    --bg-primary: #282828;
    --bg-secondary: #3c3836;
    --text-primary: #ebdbb2;
    --text-muted: #a89984;
    --accent: #83a598;
    --accent-secondary: #b8bb26;
    --border: #504945;

    /* Spacing */
    --space-unit: 0.5rem;
    --content-width: 800px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-mono);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

.container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: calc(var(--space-unit) * 4);
}

/* Header */
.site-header {
    margin-bottom: calc(var(--space-unit) * 6);
    padding-bottom: calc(var(--space-unit) * 4);
    border-bottom: 1px solid var(--border);
}

.site-header nav {
    display: flex;
    align-items: center;
    gap: calc(var(--space-unit) * 6);
}

.logo {
    display: flex;
    align-items: center;
    gap: calc(var(--space-unit) * 2);
    font-size: 1rem;
    color: var(--text-primary);
    text-decoration: none;
}

.logo::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--accent-secondary);
    border-radius: 50%;
}

.logo:hover {
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: calc(var(--space-unit) * 2);
    margin-left: auto;
    padding-left: 0;
}

.nav-links a {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: none;
    padding: calc(var(--space-unit) * 1) calc(var(--space-unit) * 2);
    border-radius: 4px;
    border: 2px solid transparent;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    text-decoration: none;
}

.nav-links a.active {
    color: var(--text-primary);
    border-color: var(--accent);
}

/* Main content */
main {
    min-height: 60vh;
}

/* Headings */
h1, h2, h3, h4 {
    font-family: var(--font-mono);
    font-weight: 700;
    margin-bottom: calc(var(--space-unit) * 2);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; margin-top: calc(var(--space-unit) * 6); }
h3 { font-size: 1.25rem; margin-top: calc(var(--space-unit) * 4); }

/* Links */
a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Paragraphs and text */
p {
    margin-bottom: calc(var(--space-unit) * 3);
}

/* Images - floating */
.img-right {
    float: right;
    max-width: 40%;
    margin: 0 0 calc(var(--space-unit) * 3) calc(var(--space-unit) * 3);
    border-radius: 6px;
}

.img-left {
    float: left;
    max-width: 40%;
    margin: 0 calc(var(--space-unit) * 3) calc(var(--space-unit) * 3) 0;
    border-radius: 6px;
}

/* Lists */
ul, ol {
    margin-bottom: calc(var(--space-unit) * 3);
    padding-left: calc(var(--space-unit) * 4);
}

li {
    margin-bottom: calc(var(--space-unit) * 1);
}

/* Code */
code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: 3px;
}

pre {
    background: var(--bg-secondary);
    padding: calc(var(--space-unit) * 3);
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: calc(var(--space-unit) * 3);
    border: 1px solid var(--border);
}

pre code {
    background: none;
    padding: 0;
}

/* Blog listing */
.post-list {
    list-style: none;
    padding-left: 0;
}

.post-item {
    margin-bottom: calc(var(--space-unit) * 6);
    padding-bottom: calc(var(--space-unit) * 6);
    border-bottom: 1px solid var(--border);
}

.post-item:last-child {
    border-bottom: none;
}

.post-meta {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: calc(var(--space-unit) * 2);
}

.post-title {
    margin-bottom: calc(var(--space-unit) * 2);
}

.post-title a {
    color: var(--text-primary);
}

.post-title a:hover {
    color: var(--accent);
}

.post-summary {
    color: var(--text-muted);
}

/* Single post */
.post-header {
    margin-bottom: calc(var(--space-unit) * 6);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: calc(var(--space-unit) * 3) 0;
}

.post-content .img-right {
    float: right;
    max-width: 40%;
    margin: 0 0 calc(var(--space-unit) * 3) calc(var(--space-unit) * 3);
}

.post-contact {
    margin-top: calc(var(--space-unit) * 6);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Tags */
.tags {
    display: flex;
    gap: calc(var(--space-unit) * 2);
    flex-wrap: wrap;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 0.2em 0.6em;
    border-radius: 3px;
}

/* Footer */
.site-footer {
    margin-top: calc(var(--space-unit) * 8);
    padding-top: calc(var(--space-unit) * 4);
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Landing page */
.hero-box {
    border: 2px solid var(--accent);
    border-radius: 6px;
    padding: calc(var(--space-unit) * 6);
    margin-bottom: calc(var(--space-unit) * 8);
    text-align: center;
}

.hero-box h1 {
    margin-bottom: calc(var(--space-unit) * 2);
    font-size: 1.5rem;
}

.hero-box .tagline {
    color: var(--text-muted);
    margin-bottom: 0;
}

.sections {
    display: flex;
    flex-direction: column;
    gap: calc(var(--space-unit) * 4);
}

.section-item h2 {
    font-size: 1.1rem;
    margin-bottom: calc(var(--space-unit) * 1);
    margin-top: 0;
}

.section-item h2 a {
    color: var(--text-primary);
}

.section-item h2 a:hover {
    color: var(--accent);
}

.section-item p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Post navigation */
.post-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: calc(var(--space-unit) * 8);
    padding-top: calc(var(--space-unit) * 4);
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
    clear: both;
}

.post-navigation .nav-prev {
    text-align: left;
}

.post-navigation .nav-next {
    text-align: right;
}

/* Page header with translations */
.page-header {
    margin-bottom: calc(var(--space-unit) * 4);
}

.page-header h1 {
    display: inline;
    margin-bottom: 0;
}

.translation-links {
    display: inline;
    font-size: 0.875rem;
    margin-left: calc(var(--space-unit) * 2);
}

.translation-links::before {
    content: '·';
    margin-right: calc(var(--space-unit) * 2);
    color: var(--text-muted);
}

.translation-links a {
    color: var(--text-muted);
    text-decoration: none;
    padding: calc(var(--space-unit) * 0.5) calc(var(--space-unit) * 1.5);
    border-radius: 4px;
    border: 2px solid transparent;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.translation-links a:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    text-decoration: none;
}

.flag-icon {
    height: 1.6em;
    width: auto;
    vertical-align: -0.45em;
}

.translation-links .sep {
    color: var(--text-muted);
    margin: 0 calc(var(--space-unit) * 1);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: calc(var(--space-unit) * 4);
    margin-top: calc(var(--space-unit) * 6);
    padding-top: calc(var(--space-unit) * 4);
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
}

.pagination a {
    color: var(--text-muted);
    text-decoration: none;
    padding: calc(var(--space-unit) * 1) calc(var(--space-unit) * 2);
    border: 2px solid transparent;
    border-radius: 4px;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.pagination a:hover {
    color: var(--text-primary);
    border-color: var(--accent);
}

.pagination .page-info {
    color: var(--text-muted);
}

/* Contact page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--space-unit) * 6);
    margin: calc(var(--space-unit) * 6) 0;
}

.contact-section h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0;
    margin-bottom: calc(var(--space-unit) * 2);
}

.contact-section ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}

.contact-section li.spacer {
    visibility: hidden;
}

.contact-section li {
    margin-bottom: calc(var(--space-unit) * 1);
}

.contact-section .icon {
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    margin-right: calc(var(--space-unit) * 1);
}

.contact-section .label {
    color: var(--text-muted);
    margin-right: calc(var(--space-unit) * 1);
}

/* Forms */
form {
    margin-top: calc(var(--space-unit) * 4);
}

.form-field {
    margin-bottom: calc(var(--space-unit) * 4);
}

.form-field label {
    display: block;
    margin-bottom: calc(var(--space-unit) * 1);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field textarea {
    width: 100%;
    padding: calc(var(--space-unit) * 2);
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: border-color 0.15s ease;
}

.form-field input[type="text"]:focus,
.form-field input[type="email"]:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-field textarea {
    resize: vertical;
    min-height: 100px;
}

button[type="submit"],
.button {
    display: inline-block;
    padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 4);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--bg-primary);
    background: var(--accent);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

button[type="submit"]:hover,
.button:hover {
    background: var(--accent-secondary);
}

.form-messages {
    margin-top: calc(var(--space-unit) * 4);
    padding: calc(var(--space-unit) * 3);
    border-radius: 4px;
    background: var(--bg-secondary);
    border: 1px solid var(--accent-secondary);
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: calc(var(--space-unit) * 3);
    }

    .site-header nav {
        flex-direction: column;
        align-items: flex-start;
        gap: calc(var(--space-unit) * 2);
    }

    .nav-links {
        margin-left: 0;
    }

    .img-right,
    .img-left,
    .post-content .img-right {
        float: none;
        max-width: 100%;
        margin: calc(var(--space-unit) * 3) 0;
    }

    .page-header h1 {
        display: block;
        margin-bottom: calc(var(--space-unit) * 2);
    }

    .translation-links {
        display: block;
        margin-left: 0;
    }

    .translation-links::before {
        display: none;
    }

    .hero-box {
        padding: calc(var(--space-unit) * 4);
    }

    .post-navigation {
        flex-direction: column;
        gap: calc(var(--space-unit) * 2);
    }

    .post-navigation .nav-prev,
    .post-navigation .nav-next {
        text-align: left;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--space-unit) * 4);
    }
}